Machine for operating on shoes



Aug. 23, 1938. L E. TOPI-IAM E-r-AL MACHINE FOR OPERATING ON SHOES 1l Sheets-Sheet l Filed March 6, 1937 Aug. .'239 w38. L. E. TOPI-JAM ET AL MACHINE FOR OPERATING ON SHOES y Filed March 6, 1937 l1 Sheets-Sheet 2 mmv,

Aug. 23, 1938. L. E. TPHAM H M. 2,127,107

MACHINE FOR OPERATING ON SHOES Fi'ledl March 6, 1957' ll Sheets-Sheet 3 Wness Fw ,do Hamm Aug, 3,. 1938. E. ToPHAM r-:T A1.

MACHINE FOR OPERATING vON SHOES 11 Sheets-Sheet 4 Filed March 6, 1957 Aug. 23, 1938. L.. TOPI-IAM ET AL 2,127,707

MACHINE FOR OPERATING ON\ SHOES Filed'MarQh 6, 1957 11 Sheets-Sheet 5 Aug. 23, 1938. E. ToPHAM ET AL MACHINE FOR OPERATING ON SHOES l1 Sheets-Sheet 6 Filed March 6, A195'? Aug. 23, 1938. L. E. ToPHAM ET AL MACHINE FOR OPERATING ON SHOES Filed March 6, 1937 l1 Sheets-Sheet 7 Aug. 23, 1938. L, E. 'roPHAM ET An. 2,127,707

l MACHINE FOR OPERATING ON SHOES 11 sheets-sheet 8 Filed March 6, 1937 A1lg 23, 1938. L. E. ToPHAM ET AL r 2,127,707

MACHINE vFOR OPERATING ON SHOESl Filed March 6, 1957 11 Sheets-Sheet 9 Aug.. 23, 1938.

L. E. ToPHAM ET AL 2,127,707

MACHINE FOR OPERATING ON SHOES v Filed March 6, 1957 ll SheeLS-Sheet lO llg- 23, 1938. L. E. TOPI-IAM ET A1.

MACHINE FOR OPER'I'INGv ON SHOES Filed March 6, 1937 ll Sheets-Sheet ll #diam Patented Aug. 23, 1938 UNITED STATS PATENT OFFICE Knott, Beverly, Mass.,

assignors to United Shoe Machinery Corporation, Paterson, N. J., a corporation of New Jersey Application March 6, 1937, Serial No. 129,458

21 Claims.

The present invention relates to machines which are used in the manufacture of shoes to perform certain operations progressively along the bottom margin of a shoe, and is herein disclosed as embodie-d in an automatic edge trimming machine having a shoe supporting jacl: and actuating mechanism for imparting tipping, turning and feeding movements to the jack to transfer the point of operation about the shoe, together with a templet which is supported in a xed predetermined relation to the shoe, and serves to determine the contour outline followed by the trimming cutter around the sole.

Experience has shown particularly in the performance of rough rounding and edge trimming operations, that a templet supported in a fixed predetermined relation to the shoe, and operating against a relatively stationary guide, provides an extremely accurate and eicient means for producing a contour of the shoe sole corresponding to the shape of the templet. In order to adapt this principle of a templet guiding means for commercial use, various attempts have heretofore been made with a single templet to cause the shoe operating devices to follow any one of a plurality of predetermined contour paths about the sole margin of a shoe supported in predetermined relation to the templet and thereby to reduce so far as possible the number of templets which must be furnished to adapt the machine for commercial use over a wide range of sizes and shapes of shoes. To this end, width grading devices having been employed as described and illustrated `in the patent to Alfred R. Morrill No. 2,050,499, dated August 11, 1936, which operate during the transfer of the operation about the shoe to control the forward and back position of the relatively stationary templet guide with relation to a master templet shaped for a definite length of shoe, to cause the trimming cutter to follow any one of a plurality of predetermined contour paths corresponding to different widths of shoe. Such a device, however, is of only limited application in View of the fact that separate templets must necessarily be supplied for each length and style of shoe.

It is a principal object of the present invention to provide guiding means cooperating with a single master templet to locate the shoe laterally with relation to the shoe operating means at the point of contact which is adjustable to cause the operating means to follow any one of a plurality of predetermined contour paths about the shoe determined in accordance with the length of shoe being operated upon.

It is a further object of the invention to provide means to control the relative positions of a templet edge gauge and a master templet of this general description during the transfer of the operation about the margin of the shoe sole which is adjustable to cause the shoe operating devices to follow any one of a number of predetermined contour paths which are determined in accordance with both the length and width of shoe being operated upon.

With these and other objects in View, as may hereinafter appear, the several features of the present invention consist in the devices, combinations and arrangement of parts hereinafter described and claimed which, together with the advantages to be obtained thereby, will be readily understood by one skilled in the art from the lfollowing description taken in connection with the accompanying drawings, in which Fig. l is a view in front elevation of an automatic edge trimming machine embodying the several features of the present invention' Fig. 2 is a plan view of the machine illustrated in Fig. 1, but with the stop motion removed; Fig. 3 is a somewhat simplified plan view similar to Fig. 2, but with the length sizing device set for operation upon a larger size shoe; Fig. 4 is an enlarged detail view illustrating particularly the mechanism for clamping the heel of a shoe supported on the jack laterally with relation to the templet; Fig. 5 is an enlarged View taken on the line 5 5 of Fig. 2, illustrating particularly the supporting and actuating mechanism for the templet guide; Fig. 6 is an enlarged detail view of the sun and planet gear control mechanism forming part of the length size grading device to determine the in-or-out position of the templet gui-de roller; Fig. 7 is a view in right side elevation of the mechanism shown in Fig. 6, with a portion of the casing broken away to show underlying parts; Fig. 8 is an enlarged detail view of the manually operable length size adjustment mechanism in the position shown in Fig. 2; Fig. 9 is a detail view partly in section taken on the line 9--9 of Fig. 8; Fig. 10 is a detail sectional View taken on the line l--l of Fig. 2; Fig. 11 is adetail sectional View taken on the line l I-l I of Fig. 2; Fig. 12 is an enlarged detail View of certain adjusting connections shown generally in Figs. 2 and 3; Fig. 13 is a sectional view taken on the line Iii-I3 of Fig. 12; Fig. 14 is an enlarged detail View of the manual control for the width grading mechanism; Fig. 15 is a sectional View taken on the line l5-I5 of Fig. 14; Figs. 16, 17 and 18 are somewhat diagrammatic plan views showing three different lengths of -shoe assembled with the templet and the positions of the templet guide roller and the edge trimming cutter with relation thereto, Fig. 16 showing the operation on a size 5C shoe, Fig. 17 showing the position of ithe parts for operating upon an 8C shoe, and

`Fig. 18 showing the position of the parts for operating upon an 11C shoe; and Fig. 19 is an explanatory diagram in which the direction and proportional amount of the corrections made in the position of the templet roller with relation to the trimming cutter'for different lengths of shoe of the same width size have been plotted for a large number of positions in the transfer of the point of operation around the shoe.

The automatic edge trimming machine disclosed in the drawings a-s embodying in a preferred form the several features of the present invention, comprises a base 29 on which is supported an edge trimmer head 22, a housing 24 for the stop motion of the machine, together with a shoe supporting jack 25 and the various supporting and controlling mechanisms therefor. The edge trimming devices, as best shown in Figs. 1 and 5, consist in an edge trimming cutter 28 of ordinary description which is supported on a downward extension of the armature shaft Sil of an electric motor 32 rigidly supported on the head 22.

The shoe supporting jack 26 comprises the toe supporting arm 21 which forms an upward eX- tension of a jack spindle 29, and has mounted thereon the toe rest 3| and the pivoted heel supporting arm 33 and heel lpost 34. The jack, as thus far described, is substantially similar to jacks of this general description well known in the art, and is arranged for operation in the usual manner, in which the positioning of a shoe and associated last on the heel post with the jack in open position operates to close and lock the jackwith the toe in gripping engagementl with the toe rest 3|. The construction and inode of operation of the jack is substantially similar toI that disclosed in the patent to Morrill No.` 1,689,594,` dated October 301, 1924.

The jack disclosed in the drawings is also provided with a templet guide at which is rigidly secured to the toe rest 3|, and extends around the shank and forepart portions of the shoe. It will readily be seen that the templet supported in this manner will occupy identically the same position with relation to the toe portion of any shoe which is mounted in the jack regardless of variations in length or width. In order to insure the correct positioning of the heel portion of a shoe laterally with relation to the jack, and more particularly with relation to the templet guide 36, a heel clamp is provi-ded comprising two gripper levers 38 and 40 which are mounted on a laterally extending bracket 42 formed as a unit with the heel post 34 which ts loosely into a corresponding socket formed in the last, and are arranged for gripping engagement with portions of the shoe upper on opposite sides of the heel. The operation of the heel grippers 38 and 4|), as best shown in Fig. 4, is controlled by means of a hand lever 44 pivotally mounte-d at 48 on the heel supporting arm 33 and provided with a V-shaped extension 48 which engages with a pivot pin 50 for two toggle links 52 and 54 connected at their outer ends respectively to the gripper levers 38 and 40. A tension spring 56 connected between the lower ends of the gripper levers 38 and 40 tends normally to maintain the levers in open position. An upward movement of the hand lever 44 operates to straighten the toggle connection 52, 54 against the pressure of the tension spring 56, and move the gripper levers 38 and 40 into gripping engagement with the heel portion of a shoe supported on the jack. This gripping engagement is maintained by means of a ratchet locking device including a spring-pressed plunger 55 supported in the handle of the lever 44 an-d arranged for engagement with the teeth of a rack on the heel supporting arm 33. It will readily be seen that the heel gripping devices constructed and arranged as above set forth, will operate to position the heel portion of the shoe laterally to bring the center line of the heel into the same position irrespective of variations in size or width, so that the shoe will always be supported in an exactly predeter mined relationship to the templet guide 36.

The mechanism herein disclosed for supporting and moving the jack to transfer the point of operation about the shoe, is substantially similar.

to mechanisms of this general type well known*4 in the art, but may be briey described as fol-- lowsz-The jack supporting structure comprises; an arm 5l in the forward end of which the lowerI end of the jack spindle 29 is rotatably mounted by means of a gimbel joint, and a support, 53 on which the arm 51 is mounted' to swing vertically in a frame 5| pivotally mounted at its lower end in the machine base so as to, be capable of swinging about a horizontal axis, and upon which the support 53 is mounted to swing about a substantially vertical axis` The mechanism for moving the jack in the direction of feed, for rotating the jack, and for imparting tipping movements to the jack, comprises a vertical cam shaft 58 upon which a series of pattern cams 59 are mounted, and connections from the cam shaft to the jack and jack supporting structure comprising the feed lever 60 connected by the link 6| to the toe portion 3| of the jack, the cord S2 passing around a wheel S3 mounted in the forward end of the arm 5l and connected through the gimbel joint to the jack spindle 29, and cam levers 64 and 65 connected respectively to the frame 5| and support 53.

In accordance with the usual construction of the jack actuating mechanism for automatic map chines of this general description, a number of banks of cams for performing each of the feeding,

ments to the shoe during the transfer of the point. of operation about the shoe sole s automaticallyy adjusted in accordance with the length size of shoe being operated upon by means of connections controlled by the feed lever 59 as the shoe supported on the jack is brought to its starting position in the machine. These connections are fully set forth in the patent to Topham and Morrill No. 1,616,714, issued February 8, 1927, but may be briefly described in connection with Fig. 2 of the drawings as followsz-The feed lever is conk nected by means of links 66 and 67 to one arm of a lever 6B, the other arm of which engages a cam on the pattern cam shaft. The links G6 and 6l are pivotally connected together and to the free end of a swinging guiding link 69. The link S9 is fulcrumed upon a lever 10 which is held locked in position during the operation on a shoe. To

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adapt the machine foroperationv on shoes of different sizes, the lever 1d is pivotally mounted upon the Imachine base so that it can be adjusted to change'the position of the fulcrum` -of the swingingv guiding link '|0 is held locked in adjusted position during the operation on the shoe by mechanism comprising a rod 'il pivotally connected to the rear end of the fulcrum carrying lever l@ and' arranged to slide in a blockpivota-lly mountedon the machine base. The rod Il is engaged by the inner cam shaped ends of short levers l2 mounted in the block-and the 4outer ends of these levers are connectedlby a pin and slot construction with a cross bar i3. This cross bar is pivotally mounted on therear end of a rod i4, theforward end of which is l pivotally connected to a bar l5. The bar 'l5 at one end is connected to one arm of a lever 'it and near its other end is connected by a link'l'l to one arm of a lever 18, the hub of which is arranged to be engaged by a latch i9. During the operation on a shoe, the lever 'i8 is held by the latch 'lil and the fulcrum carryingv lever 'l0 is locked in position. The placing of a new shoe on the jack acts to release the lever i8, so that the fulcrum carrying lever l'llis unlocked, and adjustment of the mechof the bar` anism for actuatingthe feed lever can be made by the movement of the jacked shoe to starting position in the machine. The fulcrum carrying lever l is locked in position on starting the machine by means of` a pin. 80 on` a horizontally arranged bar 8|, which pin as the bar is moved to thejright, swingsthe lever l until it is engaged by the latch l0. The bar Si isa part of the starting mechanism and'is connected by means of a bell crank lever `and connecting'4 rod to the start* ing treadle of the machine.

At this point, it may be noted that the bar 'l5 of the mechanism for locking'and unlockingthe fulcrum carrying lever of the feed mechanism is also Vutilized to adjust the speed'of the pattern cam shaft in accordance with the size of the shoe to be operated on, the arm lf3, to which one end l is` connected,` acting when moved in either direction to adjust the variable speed mechanism through. which the pattern cam shaft is driven. .The arm 'Ni is moved into thelproper position by a longitudinal. movement of the controllerbar 'l5 imparted thereto lbyfthe engagement of a pin 02 on` aforward extension of the lever ywith one of two vinclined surfaces formed on the end of the bar 'l5 remote from the arm l5, this engagement taking place duringthe forward movement of the bar 'i5 as the machine is started into operation by the depression of the starting treadle.

In carrying out the present invention, a length size grading device is provided which operates to control the positionof the templet roller 90 with relation to thetemplet guide 3d during the transfer of the point of operation about a shoe, to cause the trimming cutter to follow any one of a number of predetermined contour paths about the solemargin as determined by the size of the shoe being operated upon.' The operation of the length size grading device is controlled by means of con nections from the feed lever @El which are manually adjustable in `accordancewith the length of shoe to beoperated upon, and also by means of a cam on the pattern cam shaft 53 and connections therefrom which operate to-modify the mcvements `-imparted to thetemplet roller 0&5 from the feed lever 60 in accordance withva `predetermined pattern during the transfer ofthe point of operation about the shoe. v i

E3. The fulcrum carrying lever Inthe preferredconstruction illustrated, the

templet roller 90 cooperating with the templet 36, is carried on the forward end of a supporting arm 92 (see Figs. 2, 3 and 5) which is slid- Vably mounted adjacent its forward end on a swing control lever 94, and at its rear end is connectedby means of a pivot pin 96 (Fig. 13) to a U-shaped size control lever 98 for imparting in-and-out .movements to the supporting arm 92 and the roller 90; .The sliding connection between the arm 92 and the forward end ofthe swing lever 94 comprises a pin |00 which is secured to the control lever 94 and extends down wardly through a slot |02 in the roller support The swing lever 94 is hung on a` ,stationary` vertical pivot |04 carried o-n the maing arm 92.

chine frame, and at its rear end is connected by means of a link |06 to a pivot block |08 ad- `justablysupported in a track I |0` which is formed on the feed lever 60, and passes through its pivotal axis H2. The track ||0 is in the form of an arc having the link |06 as a radius, and is positioned on` the feed lever 00 so that when the feed lever is in the position assumed during the transfer of the point of operation about the toe of the shoe, all portions of the track will be equi-` arf.

distant from the pivotal connection between the link |00 and the swing lever 94. The connections above described including the swing lever 94 and the link |05 operate to control the position of the templet roller 90 in a path parallel to the line of feed as the point of operation is transferred about the shoe. The direction and amount of this movement of the roller 90 from the normal position, which may be taken as its position as determined by that of the feed lever B0 during the operation at the toe, is determined in accordance with the length of shoe being operatedr upon by an adjustment of the position of the pivot block |08 in the track I0. It will readily be seen that when the pivot block |08 is located exactly over the pivot H2 of the feed lever 60, no move-ev ment is imparted to the templet roller 90, so, that the contour path followed by the trimming cutter about the 'sole margin will correspond` exactly to that of the master templet 36 -which is designed for an 8C shoe. For operation upon suc cessively larger length sizes of shoes, the pivot block |08 is moved rearwardly corresponding amounts which are gauged so that when the machine is in starting position for operation upon a shoe of the designated size, the templet roller 90 is' moved a corresponding distance to the right to engage always the same point on the templet 36, as illustrated, for example, in Fig.` 3, showing the machine in starting position for operation upon an `11C shoe. The movement of the feed lever |50 during the subsequent operation about` I the shoe, will cause the templet roller 90 tobe moved gradually to the left passing through the normal position above referred to as the point of operation is transferred about the toe of the shoe.

Similarly, an adjustment of the feed block forwardly from the central position over the pivot` ||2 for the feed lever 60 will operate to adjust the starting position of the templet roller 90 to the left for operation upon successively smaller.

length sizes of shoe.

The position of the pivot block |08 in the track ||0 is adjusted manually through connections, see Figs. 3, 8 and 9, which comprise an adjusting slide block ||4 supported in a track ||6 adjacent the forward end of the feed lever 60 and cone;`

nected by means of a link |,I8 kto the pivot block.`

`'lli |08. The adjusting slide block ||4 is maintained` ltends normally to .the adjusting slide block ||4,

in any one of a number of positions corresponding to each half-length size of shoe, by the locking engagement of a spring-pressed plunger |20 in any one of a number of holes |22 in the feed lever 60. The plunger |20 is supported within a post formed on the slide block ||4, and is provided at its upper end with a manual knurled control knob |24. A compression spring |26, coiled about a reduced portion of the plunger, maintain the plunger |20 in locking engagement with one of the holes |22.

In order to cause the templet roller to follow exactly the contour path about the shoe required for each diierent length size of shoe, it has been found necessary also to provide means for moving the templet roller forward and back. This forward and back adjustment is controlled by means of the length size adjusting mechanism above described, as determined by the setting of and by means of a to as the angular 58 of the machine, planet gear mechanism to be cam |30, hereinafter referred cam, on the pattern cam shaft through a sun and described.

.l Referring specifically to Figs. 12 and 13, the U- shaped lever 98 is pivotally supported by means of two pivot pins |32 within a second U-shaped lever |34 which is in turn supported by means of pivot pins |38 within a third U-shaped lever |42 carried on a stationary pivot |44. As will readily be evident from the drawings, the fulcrums for the levers 98 and |34 are only slightly out of alignment with relation to the pivotal support 96 for the rear end of the templet roller supporting arm. 92, so that relatively small forward and back movements will be imparted thereto by the actuation of either of these levers. It Will be noted also that the actuating connection for each of these levers 98 and |34 is located to pass through the pivotal axis |44 for the lever |42, so that either or both of the levers 98 and |34 may be adjusted to a neutral position in which they move as a unit with the lever |42 about the pivotal axis |44, and are thus rendered inoperative to vary the forward and back movements imparted to the arm 92 and templet roller 90 by the actuation of the U-shaped lever |42.

In-and-out movements are imparted to the templet roller 90 and its slide support 92 from the length size control device, through connections including a link |46 which is connected at its rear end to one of the pivot pins |38, and operates to swing the U-shaped lever |42 about its pivot. At its forward end, the link` |46 is connected to a slide member |48 (see Figs. 3, 6 and 7) supported to move in a track |50 formed in a gear box member |52 which is supported on stationary pivots |54 and |55 on the machine frame and forms part of the sun and planet gear mechanism referred to. The track passes through the axis of the pivots |54, |56, and follows an arcuate path having the link |46 for its radius.

The angular position of the gear box |52 is directly controlled from the feed lever through the size adjusting mechanism above described including the pivot block 08 and link |06 through connections which comprise a crescent-shaped lever |58 (see Fig. 3) which is supported on a stationary pivot |66 and at one end is connected by a short link |62 to the pivotal connection between the link |06 and the rear end of the control lever 94 (Fig. l1) and at its other end is connected by a forwardly extending link |64 to Athe right-hand side of the gear box member |52.

The parts are so constructed and arranged that when the adjusting slide block |4 is located in position for operation upon an 8C shoe, with the pivot block |08 for the link |06 directly over the pivot ||2 of the feed lever 60, the gear box |52 will be held in the position illustrated in Figs. 2 and 6, in which all portions of the track |50 are equi-distant from the pivot |38 forming the rear connection for the link |46, so that no forward or back movements will be imparted to the lever |42 and roller 90 by the movement of the slide |48 in its track.

The connections to the sun and planet gear mechanism from the angular pattern cam |30 on the pattern cam shaft 58 of the machine comprise a cam lever |68 supported on a vertically extending pivot shaft |10 and provided with a roller |12 arranged for engagement against the cam |30. The cam lever |68 is connected by means of a link |14 to a lever arm |15 carried on a rock shaft |18 which also has supported thereon a lever arm connected by a forwardlg extending link |82 to a gear segment lever |84 supported on the pivot |56 for the gear box |52. The movements imparted to the gear segment lever |84 from the angular cam |30 and the turning movements imparted to the casing |52 from the feed lever 60, together control the operation of the sun and planet mechanism hereinafter described to impart predetermined movements to the slide |48 along the track |50. These movements of the slide |48 in combination with the angular movements of the gear box 52 and track |50 supported thereon, operate to determine the direction and amount of the forward and back movements imparted to the templet roller 90.

The sun and planet mechanism through which movements are imparted to the slide |48 comprises a vertically extending shaft |86 rotatably supported in the gear box |52 having secured thereto a gear |88 and to the bottom end thereof a pinion |90 which engages with a rack |92 rigidly secured to the machine frame and formed in the shape of an arc with the pivot |54, |56 of the gear box |52 as a center. Loosely mounted on the shaft |86 above the gear |88 is a large gear |94 which meshes with a gear segment |96 formed on the gear segment lever |84. Mounted on the under side of the large gear |94 are three planet gears |98 which are arranged to mesh with the gear |88 above referred to, and also with an internal gear 200 formed on a member 202 which is loosely mounted to turn on the shaft |86, and is provided with a gear segment 204 which meshes with a rack 206 on the slide member |48.

With this construction and arrangement of the sun and planet mechanism, rotational moveto the member 202 to move the slide member |48 in the track |50 by turning the gear box |52 on its pivot |54, |56 which operates by the engagement of the pinion |90 with the stationary rack |92 to rotate the gear |88 and planet gears |98 meshing therewith, which in turn operate through their engagement with the internal gear 200 to rotate the member 202. Movement is imparted to the rack |48 also from the angular cam |30 which operates through the gear segment lever |84 and segment |96 to rotate the large gear |94, thus causing the planet gears to be moved bodily around the gear |88, and thereby through the engagement of the planet gears with the internal gear 200 rotating the member 202 to move the slide |48 in one direction or the other on its track |50.

Thus, the rocking of the gear box |52 around its pivot |54, |56, under the influence of the connections including the crescent-shaped lever |58 and link |06 from the feed lever 60, operates to swing the track |50 away from its position normal to the pivotal connection. |38 for the link |l|6`,and at' the same time through the operation of the sun and planet mechanism above described, serves to impart lengthwise movement to the slidel Hi8 in the track |501, and thereby to rock the lever |42 about its pivot to move the templet roller 90 in or out, as the case may be. This movement of the slide |28 is modined as above described by the operation of the angular cam |30 and its connections including the gear segment lever |84 forming part of the sun and planet gear mechanism.

The principle of operation of connections from the feed lever 60 and angular cam |30 including the sun and planet mechanism above described to effect the desired in-and-out adjustments in accordance with the length size of shoe being operated upon during the transfer of thepoint of operation about the shoe, will be readily understood in connection with the explanatory diagram Fig. 19 of the drawings. As shown in this gure, all the adjustments are made from a single reference point 2 |0 at the toe of the shoe, which is always located at the same point with relation to the master templet regardless of variations in length or width of shoe being operated upon. In the diagram referred to, the line 2|2 represents the contour path followed by the trimming cutter around the sole margin o a size 8C shoe. The line 2M represents the outline of the master templet, which is designed to correspond exactly to the margin contour of a size 8C shoe, so lthat vthe templet roller 90, when maintained in a stationary position, will operate by engagement with the templet during the transfer of the `point of operation about the shoe, to cause the trimming cutter to follow exactly the desired contour path required for the trimming of an 8C shoe. The dotted outline 2|6 represents the margin contour of a size 11C shoe in the position which it will occupy with relation to the templet contour 2|4 when supported on the jack. Similarly, the dotted line 2|8 represents the margin contour of a 5C shoe when supported in operating position on the jack. The circles 220 on the templet contour 2M represent a series of points of contact of the templet roller 90 .against the templet during the transfer of the point of operation about an 8C shoe. The circles 222 on the contour line 2| 2 of an .8C shoe, represent corresponding `positions of the trimming -cutter 28 `against the shoe, as shown by construction lines 224 connecting corresponding `circles on the contour lines 2|2 and v2||. In order to ascertain the proper relative position of the trimmingcutter 28 and the templet roller 90 foreach of the stations illustrated by the circle 220 during the operation about a relatively larger or smaller shoe, a number of construction lines 226 have been drawn radiating from the reference .point 2 l0, and passing through each of the circles 222. The point of intersection of each construction line 226 with the contour path 2|6 for an 11C shoe, is `marked by a circle 228, and similarly, the point of intersection of each construction line 226 with the margin contour line 2 I8 for a 5C shoe, is marked by .a circle 230.

It will readily be seen from an inspection of Fig. 19,that the relative position of the trimming cutter 28 andthe templet roller f90 for each of the stations or points of contact 220` of the templet roller 90 with the contour outline 2|,4 of the templet 36 may be determined for each length size of shoe being operated upon bythe position of the trimming cutter on the corresponding construction line 226. Applicants length size grading device above described is arranged to impart forward and back movements and lengthwise movements in the line of feed to the roller` 90 which are arranged to cause the roller for each of the operating stations above described to be located on a line which is `parallel to the corresponding construction line 226, and passing through the circle 22,0, and thus to secure the proper relative positions of the cutter and roller illustrated by the diagram. The length and direction of movement of the roller 80 along this imaginary path from the normal position indi- 'cated by the corresponding circle 220 is determined for each operating station directly by the position of the feed lever 60 and link |06 in accordance with the setting of the pivot block |06 for the length of shoe being operated upon. At the starting position for operation upon a shoe, the roller 00 will be located at the maximum distance away from the normal position indicated by the circle 220, and gradually approaches the normal position indicated by each successive circle 220 due to the continued movement of the feed lever 60 until the toe is reached when the roller 00 is brought exactly to its normal position, .as indicated by the corresponding circle or reference point 2 l 6. During the subsequent operation on the opposite side of the shoe, the roller is again moved away from its normal position by.

an amount which is proportional to the movement of the feed lever, increasing gradually to a maximum at the end of an operation on the opposite side of the shank portion of the shoe.

It is the function of the sun and planet mechanism controlled by the angular cam |30 and by the connections from the feed lever 60 to adjust the forward and back position of the roller 90 as the point .of operation is transferred about the shoe to cause the roller 90 4at all times to travel along this imaginary path parallel to the construction line 226 corresponding to each successive station 220 in the transfer of the point of operation about the shoe.

The relative `starting positions of the templetf;

roller 00 and the cutter 28 for operation upon an ||C shoe are shown in Figs. 3 and 18. The `adjusting slid-e block lill vand pivot block |08 have been adjusted to their extreme rear position, so

that a maximum throw is imparted to the roller` 00 by any movement of the feed lever 60. As the shoe supported on the jack is now brought into operating position, it will be seen that the feed lever 60 is` moved to its extreme position to the right, thus causing the roller 90 also to `be moved to the right aproportional amount. This movement of `thefeed lever 60 at the same time acts through the link |06, crescent-shaped lever |58 and link |64 to swing thegear box |52 and track about the pivot |54, |56. The movement of the gear box in turn is rendered operative through the operation of the sun and planet mechanism above described, as modified by the starting position of the angular ca m |30, to move the slide |48, retracting the roller V90 a `slight amount so that the roller is` maintained on a line passing through the starting station 220 and parallel to the construction line 226. As the point of operation progresses toward the toe of the shoe, the movement of the feed lever causes the roller 90 to be gradually moved to the left until at the toe it is directly in line with the cutter 2B. The continued movement of the feed lever to the left as the point of operation is transferred along the other side of the shoe, causes the feed roller 90 also to continue its movement to the left by an amount Which is proportionally increased as the point of operation again approaches the shank portion of the shoe. The in-and-cut movements of the roller 90 are controlled by the movement of the feed lever 60 and by the rotation of the angular cam |30 acting through the sun and planet mechanism as above set forth, to cause the resulting movement of the roller 90 from the normal position for each successive station represented by the circles 220, to take place along a line parallel to the corresponding construction line 226, so that the relative positions of the roller 90 and cutter 28 at each of the operating stations about the shoe will be accurately represented by the relative positions of the circles 220 and 228. The actual path of movement of roller 90 about an 11C shoe is indicated by a dot-and-dash line 232 in Fig. 18.

The relative starting position of the templet roller 90 and the cutter 28 for operation upon an 8C shoe is shown in Figs. 2 and 1'7. The adjusting slide block ||4 has been moved to its middle or size 8 position, in which the pivot block |08 is directly over the pivot ||2 of the feed lever 60, so that no movement is imparted to the templet roller 90 by the swinging movements of the feed lever 60 during the transfer of the operation about the shoe. The corresponding circles 220 and 222 connected by construction lines 224 (see Fig. 19) illustrate the relative positions of the templet roller 90 and cutter 28 for each successive operating station during the operation on an 8C shoe.

The relative starting position of the templet roller 90 and the cutter 28 for operation upon a 5C shoe is shown in Fig. 16, in which the adjusting slide block I |4 and pivot block |08 have been adjusted to their extreme forward position on the feed lever 60, so that as the shoe supported on the jack is brought to starting position and the feed lever 60 is moved to the right, the swing lever 94 is moved in a clockwise direction from the position shown in Fig. 2, causing the templet roller 90 to be moved a proportional distance to the left. This movement of the feed lever 60 at the same time acts through the link |06, crescent-shaped lever |58 and link |64 to swing the gear box |52 and track |50 in a counterclockwise direction about its pivot |54, |56. The movement of the gear box in turn is rendered operative through the operation of the sun and planet mechanism above described, as modied by the starting position of the angular cam. |30, to move the slide |48, advancing the roller 90 a slight amount. This relative starting position is illustrated in diagrammatic form in Fig. 19, by the relative positions of the circle 230 representing the starting position of the cutter, and the corresponding circle 220 representing the starting position of the templet roller 00. As the point of operation progresses toward the toe of the shoe, the movement of the feed lever to the left causes the roller 90 to be gradually moved to the right until at the toe it is directly in line with the cutter 28. Continued movement of the feed lever to the left, as the point of operation is transferred along the other side of the shoe, causes the feed roller 90 always to continue its movement to the right by an amount which is proportionally increased as the point of operation again approaches the shank portion of the shoe. The in-and-out movements of the roller 90 are controlled by the movement of the feed lever 60 and by the rotation of the angular cam |30 acting through the sun and planet mechanism as above set forth, to cause the resulting movement of the roller 90 from the normal position for each successive station represented by the circles 220 to take place along a line parallel with the corresponding construction line 226, so that the relative positions of the roller 90 and cutter 28 at each of the operating stations about the shoe will be accurately represented by the relative positions of the circles 220 and 230. The actual path of movement of the roller 90 about a 5C shoe is indicated by a dot-and-dash line 234 in Fig. 16..

There is also provided in the present construction a width size grading mechanism which operates in combination With the length size grading mechanism above described to cause the trimming cutter 28 to follow any one of a number of predetermined contour paths which extend over the entire range of widths of shoe for each length, as determined by the setting of the length size adjusting slide block ||4. The width size control mechanism comprises mechanism for imparting additional in-and-out movements to the templet roller 90 which are additive to those imparted by the size grading mechanism. The width size grading mechanism comprises a width cam 240 (see Fig. 3) on the pattern shaft 58, which is engaged by a cam lever 242 on the pivot shaft |10.

The forwardly extending arm of the cam lever 242 is connected by a link 244 to a lever arm 246 secured to a vertically extending shaft 248 pivoted on the machine frame and provided at its upper end with an arcuate track 250 which extends through the pivotal axis of the shaft 248. An adjustable slide block 252 (see Figs. 14 and l5) supported in the track 250 is connected by a link 254- to one arm of a lever 256 supported on a vertical pivot 258, and connected at its other end to a rearwardly extending link 260. At its rear end, the link 260 is connected to the U-shap-ed lever |34 at a point which passes through the axis of rotation of the length size adjusting lever |42. With this construction and arrangement of the width control mechanism, it will readily be seen that when the slide block 252 is located exactly on the pivotal axis of the lever 246, no movement is imparted to the connections including the lever 256. link 280 and width size control lever |34. For this adjustment of the parts, the pivotal connection between the link 260 and the lever |34 is located in axial alignment with the pivot |44 of the lever |42, so that the lever |34 swings as a unit with the length size control lever |42. When the pivot block 252 is adjusted to the right from the position shown in Fig. 3, movement is imparted to the connections above described including the Width size control lever |34 to move the templet roller 9F! forwardly a proportional ainount determined by the setting of the block 252 for the narrower size shoes. Similarly, an adjustment of the width size control pivot block 252 to the left, from the position shown in Fig. 3, will operate to adjust the width mechanism for operation upon wider shoes of any given length size, as determined by the setting of the length size adjusting slide block ||4.

As best shown in the detail views Figs. 14 and 15, the slide block 252 has mounted therein a vertically extending plunger 264 which is provided at its upper end with a knurled control knob'l266, and is arranged for locking engagement with any one of a series of recesses 268 formed in the bottom of the` track 250. A compression spring 210 coiled about the plunger 264 between a collar 212 and a shoulder 214 formed in the block 252, tends to force the plunger 264 downwardly into locking position.

In accordance with one feature of the invention, an adjustment is provided in the mechanism for controlling the position of the templet roller 9|] to determine the width of the margin about the shoe sole left by the edge trimming operation independently of the length, width or style of shoe being operated upon. In order to provide for such an adjustment, the link 268 forming a part of the width grading mechanism, is adjustably connected to the lever 256 by means of a nut 216 which is mounted on a threaded portion of the link 266, and is pivotally supported by pins 211 in the forked end of the lever 256, so that rotational movement of the link 26|] will operate either to lengthen or shorten the link connection between the lever 256 and the U-shaped lever |34. In order to permit the free rotation of the link, the rear end thereof is screw-threaded into a nut 218 which forms the pivotal connection with the lever |34. A manual control knob 219- secured to the forward end of the link 269 provides convenient will readily be seen, however,

means for adjustment of the angular position of the linkl268. It will readily be seen from an inspection of Figs. 3 and 12 of the drawings, that the adjustment thus provided serves to control the angular position of the U-shaped width control lever |34, and thus serves to provide an in-andout adjustment in the position of the slide bar 92 and templet roller 90 which is independent of the operation of the length and width size grading devices above described. l

Further in accordance with the present invention, the machine herein disclosed is provided with means for varying the contour path followed by the trimming cutter in order to provide for variations in the style of shoe operated upon without the necessity of employing a different master templet. To this end a character cam 28|) is supported on a supplemental shaft 282 which is driven in synchronism with the pattern shaft 58 through connections which include a pinion 284 secured to turn with the character cam 288 on shaft 282 (see Figs. 1 and 2) and a pinion 286 supported on the vertical shaft 281 from which the pattern cam shaft 58 is driven by the engagement of one of the gears 288 thereon with the usual pattern driving gear 298 secured to the pattern shaft 58.

The connections from the character cam 280 for imparting in-and-out movements to the templet roller 90 (see Figs. 3, l2 and 13) comprise a cam lever 292 supported on a fixed pivot 294, and provided at one end with a roller 296 arranged for engagement with the character cam 288. vThe cam lever 292 is connected at its other end by means of a rearwardly extending link 298 to the U-shaped lever 98. The character cam 288 is illustrated in the drawings in the form of a disk which operates to maintain the pivotal connection between the link 298 and U-shaped lever 98 at all times in axial alignment with the pivot |44, so that no movement is imparted to the templet roller 90 by the character caml 288. It

that desired modifications in the characteristic outline or style of the shoe as determined by the shape of the master templet 36, may be obtained by varying the shape of the character cam disk 280 so that increments of movement are imparted to thef templet rollen 96 by movement of the U-shaped lever 98 which serve to vary the characteristic movements imparted to the roller 89 by the length and width size grading mechanisms above described.

It will readily be understood that the maar! 10 chine herein disclosed embodying applicants size grading device, may be readily adapted with minor adjustments for operation upon shoes over a range of sizesl other than that specifically described, and on a relatively larger number on different styles of shoe. In order to-secure a different range in the size of shoes operated upon, it is necessary only to utilize a different master templet which will extend the range of adjustment to either larger or smaller size shoes;- as may be desired. For operation upon widely different styles of shoes, a different set ofv pattern cams may be necessary to impart the correct tipping and turning movements to the shoe during the transfer of the point of operation about, the shoe margin. The pattern cam shaft 58 of applicants machine is constructed and arranged to have mounted thereon a number of sets of pattern cams which are vertically adjustable to permit the substitution of one seit for another in operatingv relationship to the follower connections for actuating the jack. Inasrnuch as the mechanism for achieving this adjustment is well-known in the art, and is fully illustrated and described in the patent to Alfred; R. Morrill No. 1,952,770 dated March 27, 1934, no description thereof is believed necessary.

The nature and objects of the invention having been indicated, and a machine embodying the several features of the invention having beeni specifically described, what is claimed is:-

l.. A machine for operating upon the bottom margin of a shoe having, in combinatiommeans for operating upon a shoe, ashoe supporting jack, means for relatively moving thejack and; operating means to transfer the point of. operation about the shoe, a templet, a movable guiding device engaging the templet to relatively position the jack and operating means to locatethe shoe laterally with relation to the. line of feedA at the point of operation, means for positioning the guiding device relatively to the operating means during the transfer of the point of operation about the shoe to cause the operating means to follow any one of a plurality of pren.

determined length size contour pathsabout the y shoe, said positioning means having provision `for adjustment to vary the path followed by the operating means with relation to said templet in accordance with the length size of shoe being operated upon.

2. A machine for operating upon thebottom margin of a shoe having, in combination, means for operating upon a shoe, asho'e-supporting jack, a templet supported thereon having a'guid-J., 65

ing contour surface determined for a shoe of `a predetermined length size, `means for 'locating a shoe on the jack in a predetermined position with relation to the templet, a movable guiding device engaging the templet to relatively position the jack and operating means to locate the shoe laterally with relation to the line of feed at the point of operation, and means for positioning the guiding device during the 'transfer of the point of operation about the shoe to cause the? operating means and guiding device to engage at all times with proportionate points respectively of the shoe margin and of the templet, said positioning means having provision for adjustment to vary the path followed by the operating means with relation to said templet in accordance with the length size of shoe being operated upon.

3. A machine for operating upon the bottom margin of a shoe having, in combination, means for operating upon a shoe, a shoe supporting jack, a templet supported thereon having a guiding contour surface determined for a shoe of a predetermined length size, means for locating shoes of varying length sizes on the jack in predetermined relation to the templet, a movable guiding device engaging the templet to relatively position the jack and operating means to locate the shoe laterally with relation to the line of feed at the point of operation, and means including a connection movable with the shoe for positioning the guiding device relatively to the operating means during the transfer of the point of operation about the shoe to cause the operating means and the guiding device to engage at all times with proportionate points respectively of the contour outline to be followed by the operating means about the jacked shoe and of the templet.

4. A machine for operating upon the bottom margin of a shoe having, in combination, means for operating upon a shoe, a shoe supporting jack, a templet supported thereon having a guiding contour surface determined for a shoe of predetermined length size, means for locating a shoe on the jack with the toe portion thereof in a predetermined position with relation to the templet, a movable lguiding device engaging the templet to relatively position the jack and operating means to locate the shoe laterally with relation to the line of feed at the point of operation, and means including a connection movable With the shoe for positioning the guiding device relatively to the operating means in the line of feed during the transfer of the point of operation about the shoe to cause the operating means and guiding device to engage at all times with proportionate points respectively of the shoe margin and of the templet, said positioning means having provision for adjustment in accordance with the length size of shoe being operated upon.

5. A machine for operating upon the bottom margin of a shoe having, in combination, means for operating upon a shoe, a shoe supporting jack, a templet supported thereon having a guiding contour surface determined for a shoe of a predetermined length size, means for locating a shoe on the jack with the toe portion thereof in a predetermined position with relation to the templet, a movable guiding device engaging the templet to relatively position the jack and operating means to locate the shoe laterally with relation to the line of feed at the point of operation, means for positioning the guiding device relatively to the operating means in the line of feed and transversely thereof during the transfer of the point of operation about the shoe to cause the operating means and guiding device to engage at all times with proportionate points respectively of the shoe margin and templet, and means for adjusting said means for positioning the guiding device to vary the path followed by the operating means with relation to said templet in accordance with the length size of shoe being operated upon.

6. A machine for operating upon the bottom margin of a shoe having, in combination, means for operating upon a shoe, a shoe supporting jack, a templet supported thereon having a guiding contour surface determined for a shoe of a predetermined length size, means for locating shoes ing. device engaging the templet to relatively position the jack and operating means to locate the shoe laterally with relation to the line of feed at the point of operation, a member movable with the .shoe and connections therefrom for positiomng the guiding device relatively to the operating means in the line of feed during the transfer of the point of operation about the shoe to cause the operating means and guiding device to engage at all times with proportionate points respectively of the shoe margin and of the templet, and connections from said member movable in accordance with a predetermined pattern during the transfer of the point of operation about the shoe for positioning the guiding device laterally of the line of feed.

7. machine for operating upon the bottom margin of a shoe having, in combination, means for operating upon a shoe, a shoe supporting jack, means for moving the jack relatively to the operating means to transfer the point of operation about the shoe, a templet supported on the position the jack and operating means to locatethe shoe laterally with relation to the line of feed at the point of operation a member movable vice relatively to the operating means in the line of feed during the transfer of the operation about the shoe to cause the operating means and guidabout the shoe for positioning the guiding device `laterally of the line of feed, and means for ad- Justing said connections in accordance with the length size of shoe being operated upon to cause the operating means to follow the contour outline of the jacked shoe.

8. machine for operating upon the bottom margin of a shoe having, in combination, means predetermined position with relation to the templet, a movable guiding device engaging the templet to relatively position the jack and operating means to locate the shoe laterally with relation to the line of feed at the point of operation, and a length size grading device comprising a connection from said feed member for positloning the guiding device relatively to the operatlng means in the line of feed during the transfer of the operation about the shoe to cause the operating means and guiding device to engage at all times With proportionate points respectively of the shoe margin and the templet, a cam actuated in timed relation to the transfer of the operation around the shoe, and connections acted upon jointly by said `feed member and by said cam to position the guiding device transversely'of the line of feed to cause the operating means to follow a' predetermined length size contour path about the jacked shoe.

9. A machine for operating upon the bottom margin ofa shoe having, in combination, means for operating upon a shoe, a shoe supporting jack, means including a feed lever for moving the jack relatively to the operating means to transfer the point of operation about the shoe, atemplet supported thereon having a guiding 'contour surface determinedfor a shoe of a predetermined length size, means for mounting ash'oe on the jack with the 'toe portion thereof in a predetermined position With relation to the templet, a movable guiding device engaging the templet to relatively position the jack and operating means to locate the shoe laterally with relation to the line of feed at the point of operation, and a length size grading Vdevicecomprising a connection from said feed lever having `provision for adjustment in accordance with the length size of the jacked shoe and operative during the transfer of the operation about the shoe to cause the guiding device and operating means to engage at all times with proportionate points respectively of the templet and the contour outline of the shoe margin, a cam` rotatable in timed relation to the transfer of the operation about the shoe, and means acted upon jointly by said adjustable connection and by said cam for positioning the guiding device transversely yof the line of feed during the transfer of the operation about the shoe.

10. A machine for `operating uponthe bottom margin of a shoe having, in combination, means for operating upon a shoe, a shoe supporting jack, means including Ia feedflever connected to the toe portion of the jack for moving the jack relatively to the operating means` to transfer the point of operation about vthe shoe, a templet having a fixed contour `and supported in a predetermined relationship to the jack and shoe supported thereon, a movable guiding device engaging the templet to relatively position the jack and operating means to locate the shoe margin laterally with relation to the line of feed at the r point of operation, and means vfor controlling the movements of the guiding device during the transfer of the operation about the shoe to cause `the operating means to follovvl any one of a plurality of predetermined marginal contour paths about the shoe comprising a connection from the feed lever for moving the guiding device in the line of feed with relation tothe operating means an amount which is proportioned to the distance of the point of operation from a reference point located at the toe of the shoe, meansfor adjusting the ratio of said proportional movements in accordance with thelength size ofvshoe being operated upon, means actuated by said connections for moving the guiding device transversely of the line of feed, a cam, and connections actuated thereby for modifying the voperation of said latter meansto movethe guiding device transversely of the line of feed inaccordance With a predetermined pattern `during the transfer of the operation Vabout the shoe, y

11. A machine for operating upon the bottom margin of a shoe having, in combination, means for operating upon a shoe, a shoe supporting jack, a templet supportedthereon having a guiding contour surface determined for a shoe of a. predetermined length and Width size, means for locating a shoe on the jack in av predetermined position with relation to the templet, a movable guiding device engaging the templet to relatively position the jack and operating means tolocate the shoe laterally4 with relation `to the line of feed at the point of operation, and means for positioning the guiding device relatively to the operating means during the transfer of theV operation about the shoe to cause the operating means to follow any one of a plurality of predetermined length and Width size contour paths about a shoe supported on the jack, said positioning 'means having provision for adjustment in accordance with both the length sizev and Width size of the shoe being operated upon.

12. A machine for operating upon the bottom margin of a shoe having, in combination, means for operating upon a shoe, a shoe supporting jack, means `for relatively moving the jack and operating means to transfer the point of operation about the shoe, a templet supported in a predetermined relationship tothe jack and shoe supported thereon, a movable guiding device en,- gaging the templet to relatively position the jack and operating means to locate the shoe' laterally with relation to the line of feed at the point of operation, means for positioning the guiding device relatively to the operating means during the transfer of the operation about Vthe shoe to cause theoperatingmeans to follow a predetermined length size contour path corresponding to the length size of the jacked shoe',A and means for modifying the position of the guiding means during the transfer of the operation about the shoe to cause the .operating means to follow a predetermined width size contour outline corresponding to that of the jacked shoe. i 13. `A machine for operating upon the bottom margin of a shoeV having,;in combination, means for operating upon a shoe, a shoe supporting jack, means for relatively moving the jack and operating means to transfer the point of operation about the shoe, a templet `supported in, a predetermined relationship to the jack and shoe supported thereon, a movable guiding device engaging the templet to relatively position the jack and operating means to locate the shoe laterally with relation to the line of feed at the point of operation, a length size grading means for positioning the guiding device relatively'to the operating means during the transfer of the point of operation about the shoe to' cause the operating means to follow any one of a plurality of predetermined contour paths about the shoe, said length size grading Imeans having provision for adjustment in accordance with the length size of shoe being operated upon, and Width size grading means for positioning vthe guiding device during the transfer of the operation about the shoe, said Width size grading means having provision for adjustment to cause the operatingmeans to follow any one ofa pluralityv of predetermined contour paths corresponding to different Widthsy of shoe of the length size determined by the adjustment ofthe lengthsize grading means.

14. A machine for operating upon the bottom margin of a shoe having, in combination, means` for operating upon a shoe, a shoe `supporting jack, a` templet supported lthereon having a guid- 

